748.15% is the change from 81 to 687
Calculation steps:
[( 687 - 81 ) ÷ 81] x 100 = 748.15%
Formula
Percentage change = [(687 - 81) / 81] x 100
Subtract the new number by the original number
687 - 81 = 606
606 ÷ 81 = 7.481481481481482
7.481481481481482 x 100 = 748.15%